_EC 3.6.5.- Acting on GTP; involved in cellular and subcellular movement. 22 PDB entries  
EC 3.-.-.- Hydrolases. [21,057 PDB entries]
EC 3.6.-.- Acting on acid anhydrides. [2,183 PDB entries]
EC 3.6.5.- Acting on GTP; involved in cellular and subcellular movement. [22 PDB entries]    
EC 3.6.5.1 Heterotrimeric G-protein GTPase. [-]
EC 3.6.5.2 Small monomeric GTPase. [-]
EC 3.6.5.3 Protein-synthesizing GTPase. [-]
EC 3.6.5.4 Signal-recognition-particle GTPase. [-]
EC 3.6.5.5 Dynamin GTPase. [22 PDB entries]
EC 3.6.5.6 Tubulin GTPase. [-]
EC 3.6.5.n1 Elongation factor 4. [-]

[-] signifies that there are no PDB entries for the given enzyme subclass